Prison officials say Hernandez used bed sheets to hang himself from his cell window. He also used several items to jam the door shut.

The MDOC released this statement:

On April 19, 2017 Aaron Hernandez was discovered hanged in his cell by corrections officers at the Souza Baranowski Correctional Center in Shirley Massachusetts at approximately 3:05 a.m., lifesaving techniques were attempted on Mr. Hernandez and he was transported to UMASS Leominster where he was pronounced dead at 4:07 a.m. by a physician at the hospital. Mr. Hernandez was in a single cell in a general population housing unit. Mr. Hernandez hanged himself utilizing a bed sheet that he attached to his cell window. Mr. Hernandez also attempted to block his door from the inside by jamming the door with various items. The Massachusetts State Police are on scene and the investigation continues. Mr. Hernandez’s next of kin have been notified.

According to the Associated Press, Hernandez was serving a life sentence for the 2013 murder of Odin Lloyd. He was acquitted Friday in the 2012 double slaying of Daniel de Abreu and Safiro Furtado in Boston.